Sensor driving device having substrate with electromagnetic driving unit and protrusion part and camera module having same

ABSTRACT

A sensor driving device is provided. A sensor driving device according to one aspect of the present invention comprises: a first substrate; a second substrate disposed on the first substrate and electrically connected to the first substrate; and an image sensor disposed on the second substrate, wherein the second substrate comprises a body and a first protrusion part protruding from one end of the body, and the first protrusion part comprises a first extension part extending in a first direction from the body, and a second extension part extending in a second direction that differs from the first direction from the first extension part.

CROSS REFERENCE TO RELATED APPLICATIONS

This application is the National Phase of PCT International ApplicationNo. PCT/KR2019/010945 filed on Aug. 27, 2019, which claims priorityunder 35 U.S.C. 119(a) to Patent Application No. 10-2018-0100430, filedin the Republic of Korea on Aug. 27, 2018, all of which are herebyexpressly incoiporated by reference into the present application.

TECHNICAL FIELD

The present invention relates to a sensor driving device and a cameramodule.

BACKGROUND ART

The content described below provides background information for thepresent embodiment, but does not describe the prior art.

As the spread of various mobile terminals is widely generalized andwireless Internet services are commercialized, the demands of consumersrelated to the mobile terminals are also diversified, and various typesof additional devices are mounted on the mobile terminals.

Among them, there is a camera module for photographing a subject as aphotograph or a moving picture. Meanwhile, in recent camera modules, anautofocus function that automatically adjusts focus according to thedistance of a subject is applied. In addition, an image stabilizationfunction that prevents an image from shaking caused by the hand shakingof a photographer has been applied.

Meanwhile, various attempts have been made to reduce the size of asensor driving device applied to a camera module and reduce powerconsumption for an auto focus function or an image stabilizationfunction.

DETAILED DESCRIPTION OF THE INVENTION Technical Subject

The problem to be solved by the present invention is to provide a sensordriving device and a camera module capable of reducing the size of thesensor driving device and reducing power consumption.

Technical Solution

A sensor driving device according to one aspect of the present inventionfor achieving the above objective comprises: a first substrate; a secondsubstrate disposed on the first substrate and electrically connected tothe first substrate; and an image sensor disposed on the secondsubstrate, wherein the second substrate comprises: a body and a firstprotrusion part protruding from one end of the body, and wherein thefirst protrusion part comprises: a first extension part extending fromthe body in a first direction; and a second extension part extendingfrom the first extension part in a second direction that differs fromthe first direction.

In addition, the second substrate comprises a second protrusion partprotruding from the one end of the body and spaced apart from the firstprotrusion part, wherein the second protrusion part may comprise a firstextension part extending from the body in the first direction and asecond extension part extending from the first extension part in thesecond direction.

In addition, the second substrate comprises: a third protrusion partprotruding from the other end of the body; and a fourth protrusion partspaced apart from the third protrusion part, wherein the thirdprotrusion part comprises: a first extension part extending from thebody in a third direction; and a second extension part extending fromthe first extension part in a fourth direction different from the firstdirection, and wherein the fourth protrusion part may comprise: a firstextension part extending from the body in the third direction; and asecond extension part extending from the first extension part in thefourth direction.

In addition, one end and the other end of the body are outercircumferential surfaces of the body, and the first direction and thethird direction are the optical axis direction, the second direction,and the fourth direction may be a direction passing through the areaoverlapped with the body in the optical axis direction.

In addition, a second extension part of the first protrusion part, asecond extension part of the second protrusion part, a second extensionpart of the third protrusion part, and a second extension part of thefourth protrusion part may be overlapped with the body in the opticalaxis direction.

In addition, the second substrate may comprise a first pad part havingone end connected to the first protrusion part and the other enddisposed on the first substrate.

In addition, the first pad part may comprise: a first pad unit formed bybeing bent from the second extension part of the first protrusion part;a second pad unit formed by being bent from the first pad unit; and athird pad unit formed by being bent from the second pad unit.

In addition, the second substrate may comprise: a first pad part havingone end connected to the first protrusion part and the other enddisposed on the first substrate; a second pad part having one endconnected to the second protrusion part and the other end disposed onthe first substrate; a third pad part having one end connected to thethird protrusion part and the other end disposed on the first substrate;and a fourth pad part having one end connected to the fourth protrusionpart and the other end disposed on the first substrate.

In addition, the first to fourth pad parts may be spaced apart from eachother and may not be overlapped with the body in the optical axisdirection.

In addition, a first driving unit disposed on the second substrate and asecond driving unit corresponding to the first driving unit may befurther comprised.

In addition, the first driving unit may comprise a plurality of firstdriving units disposed on the body of the second substrate.

In addition, the plurality of first driving units may comprise fourfirst driving units disposed adjacent to a corner region of the imagesensor and two first driving units disposed adjacent to a central regionof a side of the image sensor.

In addition, the second driving unit may comprise a plurality of seconddriving units disposed at positions corresponding to the plurality offirst driving units of the first driving unit.

In addition, it may comprise a holder disposed between the first drivingunit and the second driving unit, and a plurality of wires coupled tothe second substrate and the holder.

In addition, the first substrate may comprise an opening in which thebody of the second substrate is disposed, and a connector disposedadjacent to the opening and coupled to the first pad part of the secondsubstrate

In addition, the first driving unit further comprises a third substrateon which the plurality of first driving units are disposed, the seconddriving unit further comprises a fourth substrate on which the pluralityof second driving units are disposed, and the third substrate and thefourth substrate may comprise openings overlapped with the image sensorin the optical axis direction

A sensor driving device according to an aspect of the present inventionfor achieving the above objective comprises: a first substrate; a secondsubstrate disposed on the first substrate and electrically connected tothe first substrate; an image sensor disposed on the second substrate; afirst driver disposed on the second substrate; and a second driving unitdisposed to correspond to the first driving unit, wherein the firstdriving unit comprises a plurality of first driving units disposedadjacent to the circumference of the image sensor, and a portion of thesecond substrate is overlapped with the plurality of first driving unitsin a direction perpendicular to an optical axis.

In addition, the plurality of first drive units may comprise: two firstdriving units disposed adjacent to both ends of the first side of theimage sensor; two first driving units disposed adjacent to both ends ofa second side facing the first side of the image sensor; and two firstdriving units disposed adjacent to the center regions of the third andfourth sides of the image sensor.

In addition, in the sensor driving device, the second substratecomprises a plurality of protrusion parts, and the plurality ofprotrusion parts comprises: a first extension part extending in theoptical axis direction; and a second extension part connected to thefirst extension part and overlapped with the first extension part in adirection perpendicular to the optical axis direction.

In addition, one among the plurality of first driving units is disposedon one side of the second extension part, and the other may be disposedon the other side of the second extension part.

A camera module according to an aspect of the present invention forachieving the above objective comprises: a first substrate; a secondsubstrate disposed on the first substrate and electrically connected tothe first substrate; an image sensor disposed on the second substrate; alens holder disposed on the second substrate; a liquid lens unitdisposed inside the lens holder; a first driver disposed on the secondsubstrate; a second driving unit facing the first driving unit; and athird substrate disposed with the second driving unit, disposed on thesecond substrate, and electrically connected to the first substrate,wherein the second substrate may comprise: a first region disposed withthe image sensor; a second region being bent from one end of the firstregion in a first direction; and a third area being bent from one end ofthe second area in a second direction.

Advantageous Effects

Through this embodiment a sensor driving device and a camera modulecapable of reducing the size of the sensor driving device and reducingthe power consumption may be provided.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 is a perspective view of a camera module according to anembodiment of the present invention.

FIG. 2 is an exploded perspective view of a camera module according toan embodiment of the present invention.

FIG. 3 is a perspective view of a partial configuration of a cameramodule according to an embodiment of the present invention.

FIG. 4 is a plan view of a partial configuration of a camera moduleaccording to an embodiment of the present invention.

FIG. 5 is a front view of a partial configuration of a camera moduleaccording to an embodiment of the present invention.

FIG. 6 is a side view of a partial configuration of a camera moduleaccording to an embodiment of the present invention.

FIG. 7 is an exploded view of some configurations of a camera moduleaccording to an embodiment of the present invention.

FIG. 8 is a perspective view of a partial configuration of a cameramodule according to an embodiment of the present invention.

FIG. 9 is a perspective view of a partial configuration of a cameramodule according to an embodiment of the present invention.

FIGS. 10 to 13 are operational diagrams of a camera module according toan embodiment of the present invention.

BEST MODE

Hereinafter, embodiments of the present invention will be described indetail with reference to the accompanying drawings.

However, the technical idea of the present invention is not limited tosome embodiments to be described, but may be implemented in variousforms, and if it is within the scope of the technical idea of thepresent invention, one or more of the components may be selected,combined, and substituted between the embodiments for use.

In addition, terms (comprising technical and scientific terms) used inthe embodiments of the present invention are generally understood bythose of ordinary skill in the technical field to which the presentinvention belongs unless explicitly defined and described, and it can beinterpreted as a meaning, and terms generally used, such as termsdefined in a dictionary, may be interpreted in consideration of themeaning in the context of the related technology.

In addition, terms used in the embodiments of the present invention arefor describing the embodiments and are not intended to limit the presentinvention.

In the present specification, the singular form may comprise the pluralform unless specifically stated in the phrase, and when described as “atleast one (or more than one) of A and B and C”, it may contain one ormore of all combinations that can be combined with A, B, and C.

In addition, terms such as first, second, A, B, (a), (b), and the likemay be used in describing the components of the embodiment of thepresent invention. These terms are only for distinguishing the componentfrom other components, and are not limited to the nature, order, ororder of the component by the term.

And, when a component is described as being ‘connected’, ‘coupled’ or‘interconnected’ to another component, the component is not onlydirectly connected, coupled or interconnected to the other component,but may also comprise cases of being ‘connected’, ‘coupled’, or‘interconnected’ due that another component between that othercomponents.

In addition, when it is described as being formed or disposed in the“top (upper side) or bottom (lower side)” of each component, the top(upper side) or bottom (lower side) not only comprises a case when thetwo components are in direct contact with each other but also comprisesa case where one or more other components are formed or disposed betweenthe two components. In addition, when expressed as “top (upper side) orbottom (lower side)”, the meaning of not only an upward direction butalso a downward direction based on one component may be comprised.

The ‘optical axis direction’ used below is defined as the optical axisdirection of the lens coupled to the holder. Meanwhile, the ‘opticalaxis direction’ may correspond to an ‘up-down direction’, a ‘z-axisdirection’, and the like. Hereinafter, the present invention will bedescribed in more detail with reference to the accompanying drawings.

FIG. 1 is a perspective view of a camera module according to anembodiment of the present invention. FIG. 2 is an exploded perspectiveview of a camera module according to an embodiment of the presentinvention. FIG. 3 is a perspective view of a partial configuration of acamera module according to an embodiment of the present invention. FIG.4 is a plan view of a partial configuration of a camera module accordingto an embodiment of the present invention. FIG. 5 is a front view of apartial configuration of a camera module according to an embodiment ofthe present invention. FIG. 6 is a side view of a partial configurationof a camera module according to an embodiment of the present invention.FIG. 7 is an exploded view of some configurations of a camera moduleaccording to an embodiment of the present invention. FIG. 8 is aperspective view of a partial configuration of a camera module accordingto an embodiment of the present invention. FIG. 9 is a perspective viewof a partial configuration of a camera module according to an embodimentof the present invention.

Referring to FIGS. 1 to 10 , the camera module 10 according to anembodiment of the present invention may comprise: a first substrate 100,a second substrate 200, an image sensor 300, and a first driving unit400, a filter 600, a second driving unit 800, a holder 900, a wire 1000,a lens holder 1100, and a lens module, however, it may be implemented byexcluding some of these configurations, but not excluding additionalconfigurations other than these. At this time, the lens module maycomprise a first lens unit 1200, a second lens unit 1300, and a liquidlens unit 1400. In addition, the camera module 10 may comprise a sensordriving device. The sensor driving device may comprise a first substrate100, a second substrate 200, a first driving unit 400, and a seconddriving unit 800, but it does not exclude additional configuration otherthan these. In addition, the camera module 10 may be comprised in anoptical device. The optical device may comprise a housing for mountingat least one of a camera module 10, a display unit, a communicationmodule, a memory storage unit, and a battery.

The camera module 10 may comprise a first substrate 100. A secondsubstrate 200 may be disposed on the first substrate 100. The firstsubstrate 100 may be electrically connected to the second substrate 200.A holder 900 may be disposed on the first substrate 100. The firstsubstrate 100 and the second substrate 200 may be integrally formed. Thefirst substrate 100 may comprise a first opening 110, a connector 120, adevice 102, a flexible printed circuit board (FPCB) 104, and an externalconnector 106.

The first substrate 100 may comprise a first opening 110. A body 210 ofthe second substrate 200 may be disposed in the first opening 110. Thefirst opening 110 may be formed larger than the body 210 of the secondsubstrate 200. The first opening 110 may be formed smaller than thesecond substrate 200. The first opening 110 may be overlapped, in theoptical axis direction, with the body 210 of the second substrate 200,the image sensor 300, the first driving unit 400, the third substrate500 and the filter 600, the fourth substrate 700, the second drivingunit 800, at least a portion of the holder 900, the wire 1000, the lensholder 1100, the first lens unit 1200, the second lens unit 1300, andthe liquid lens unit 1400.

The first substrate 100 may comprise a connector 120. The connector 120may be disposed on the upper surface of the first substrate 100. Theconnector 120 may be disposed at a position adjacent to the opening 110.The connector 120 may be disposed at a position adjacent to the longside of the opening 110. The connector 120 may be coupled to a pad part220 of the second substrate 200. The connector 120 may be electricallyconnected to the pad part 220 of the second substrate 200. The connector120 may comprise a plurality of connectors. The connector 120 maycomprise first to fourth connectors 122, 124, 126, and 128. The first tofourth connectors 122, 124, 126, and 128 may be spaced apart from eachother. The first and third connectors 122 and 126 are disposed adjacentto the first long side of the opening 110, and the second and fourthconnectors 124 and 128 may be disposed adjacent to the opening 110 andthe second long side facing the first long side. The first connector 122is electrically connected to the first pad part 2201, the secondconnector 124 is electrically connected to the second pad part 2202, thethird connector 126 is electrically connected to the third pad part2203, and the fourth connector 128 may be electrically connected to thefourth pad part 2204.

The first substrate 100 may comprise a device 102. The device 102 maycomprise at least one of a passive device and an active device, and mayhave various widths and heights. That is, the device 102 refers to aplurality of circuit elements, and may be protruded toward the outsidewhile having a height higher than the height of the first substrate 100.The plurality of circuit elements 102 may not be overlapped with thelens module in the optical axis direction.

The first substrate 100 may comprise an FPCB 104. The first substrate100 may be formed of a rigid flexible printed circuit board (RFPCB)comprising the FPCB 104. The FPCB 104 may be bent as required by thespace in which the camera module 10 is mounted.

The first substrate 100 may comprise an external connector 106. Theexternal connector 106 may electrically connect the first substrate 100to an external power source or other device (e.g., an applicationprocessor) outside the camera module 10.

The camera module 10 may comprise a second substrate 200. The secondsubstrate 200 may be disposed on the first substrate 100. At least aportion of the second substrate 200 may be overlapped with the firstopening 110 in the optical axis direction. The second substrate 200 maybe electrically connected to the first substrate 100. At least a portionof the second substrate 200 may be overlapped with the first drivingunit 400 and the second driving unit 800 in the optical axis direction.At least a portion of the second substrate 200 may be moved or rotatedin a direction perpendicular to the optical axis due to magneticinteraction between the first driving unit 400 and the second drivingunit 800. At least a portion of the second substrate 200 may beoverlapped with the first driving unit 400 in a direction perpendicularto the optical axis direction. The second substrate 200 may comprise abody 210, a protrusion part 224, and a pad part 220.

The second substrate 200 may comprise a body 210. The body 210 may havea square plate shape. The body 210 may have a rectangular shape. Thebody 210 may be disposed on the first opening 110 of the first substrate100. The body 210 may be overlapped with the first opening 110 in theoptical axis direction. The image sensor 300, at least a portion of thefirst driving unit 400, and a wire 1000 may be disposed on the body 210.A plurality of first driving units 410, 420, 430, 440, 450, and 460 maybe disposed on the upper surface of the body 210.

The body 210 may comprise a second opening 202. The image sensor 300 maybe disposed in the second opening 202. The second opening 202 may beoverlapped with the image sensor 300 in the optical axis direction.

The body 210 may comprise a hole 204. The hole 204 of the body 210 maybe penetrated by a wire 1000. The wire 1000 may be fixed to the hole 204of the body 210 by a method such as fusion welding and the like.

The second substrate 200 may comprise a protrusion part 224. Theprotrusion part 224 may be formed by extending from the body 210. Theprotrusion part 224 may be formed by extending from the end of the body210. The protrusion part 224 may be formed by extending from the outerside surface of the body 210. The protrusion part 224 may be formed byextending from the body 210 in an optical axis direction, an upwarddirection, or a first direction. The protrusion part 224 may comprise atleast one bent part. The bending angle a of the at least one bentportion may be an obtuse angle. At least a portion of the protrusionpart 224 may be disposed on the body 210. At least a portion of theprotrusion part 224 may be disposed to be spaced apart from the uppersurface of the body 210. At least a portion of the protrusion part 224may be disposed on the body 210.

The protrusion part 224 may comprise a first extension part 222, asecond extension part 225, and a pad part 220. The first extension part222 may be formed by extending from the body 210 in the optical axisdirection. The second extension part 225 may be connected to the firstextension part 222. The second extension part 225 may be overlapped withthe first extension part 222 in a direction perpendicular to the opticalaxis, that is, in a horizontal direction.

The protrusion part 224 may comprise a plurality of protrusion parts.The protrusion part 224 may comprise first to fourth protrusion parts.The first and second protrusions are formed to be protruded from thefirst side 212 of the body 210, and the third and fourth protrusionparts may be formed to be protruded from the second side 216 facing thefirst side 212 of the body 210. The first and second protrusion partsare protruded from one end of the body 210, and the third and fourthprotrusion parts may be protruded from the other end of the body 21. Thefirst to fourth protrusion parts may be protruded from the short side ofthe body 210. The first to fourth protrusion parts may be disposedspaced apart from each other. Each of the first to fourth protrusionparts may comprise a first extension part 222 and a second extensionpart 225.

The first extension part 2221 of the first protrusion part may beprotruded from one end of the body 210. The first extension part 2221 ofthe first protrusion part may be formed by extending from the body 210in a first direction. The second extension part 2251 of the firstprotrusion part may be formed by extending from the first extension part2221 in a second direction different from the first direction. Thesecond extension part 2251 of the first protrusion part may beoverlapped with the body 210 in the optical axis direction.

The first extension part 2222 of the second protrusion part may beprotruded from one end of the body 210. The first extension part 2222 ofthe second protrusion part may be formed by extending from the body 210in a first direction. The second extension part 2252 of the firstprotrusion part may be formed by extending from the first extension part2222 in a second direction. The second extension part 2252 of the secondprotrusion part may be overlapped with the body 210 in the optical axisdirection.

The first extension part 2223 of the third protrusion part may beprotruded from the other end of the body 210. The first extension part2223 of the third protrusion part may be formed by extending from thebody 210 in a third direction. The second extension part 2253 of thethird protrusion part may be formed by extending from the firstextension part 2223 in a fourth direction different from the firstdirection. The second extension part 2253 of the third protrusion partmay be overlapped with the body 210 in the optical axis direction.

The first extension part 2224 of the fourth protrusion part may beprotruded from the other end of the body 210. The first extension part2224 of the fourth protrusion part may be formed by extending from thebody 210 in a third direction. The second extension part 2254 of thefourth protrusion part may be formed by extending in the fourthdirection from the first extension part 2224. The second extension part2254 of the fourth protrusion part may be overlapped with the body 210in the optical axis direction.

Here, the first direction and the third direction may mean an opticalaxis direction. In addition, the second direction and the fourthdirection may mean a direction passing through a region overlapped withthe body 210 and the optical axis direction. In addition, the firstdirection may mean an upward direction with respect to the first shortside 212 of the body 210 of the second substrate 200, and the seconddirection may be a direction pointing toward the short side 216 facingthe first short side 212. At this time, the third direction may mean anupward direction with respect to the second short side 216 of the body210 of the second substrate 200, and the fourth direction may also meana direction pointing toward the first short side 212 corresponding tothe second short side 216. However, the first to fourth directions arenot limited thereto and may be variously changed.

In this case, as illustrated in FIG. 7 , it can also be applied on anexploded view. Referring to FIG. 7 , a first direction of a firstextension part 2221 of a first protrusion part is an upward directionwith respect to the body 210 of the second substrate 200, and the seconddirection of the second extension part 2251 of the first protrusion partmay mean a direction other than the upward direction based on the body210 of the second substrate 200. In addition, the third direction of thefirst extension part 2223 of the third protrusion part is a downwarddirection different from the first direction, and the fourth directionmay mean a direction other than the first direction and the thirddirection. In this case, the second and fourth directions may mean thesame direction, or it may mean a different direction.

The second substrate 200 may comprise a pad part 220. The pad part 220may have one end connected to the protrusion part 224 and the other endconnected to the connector 120 of the first substrate 100. The other endof the pad part 220 may be disposed on the first substrate 110. The padpart 220 may comprise a first pad unit 226, a second pad unit 227, and athird pad unit 228. One end of the first pad unit 226 may be disposedadjacent to the short sides 212 and 216 of the body 210, and the otherend may be disposed adjacent to the long sides 214 and 218 of the body210. The second pad unit 227 may not be overlapped with the firstopening 110 of the first substrate 100 in the optical axis direction.The third pad unit 227 may be disposed adjacent to the first opening 110of the first substrate 100. The first pad unit 226 and the second padunit 227 may be formed to have an “L” shape as a whole. The pad part 220may comprise a plurality of pad parts. A plurality of pad units may bespaced apart from each other. The plurality of pad units may not beoverlapped with the body 210 in the optical axis direction. The firstpad unit 226 and the second pad unit 227 may be overlapped with thefirst opening 110 of the first substrate 100 in the optical axisdirection. The pad part 220 may comprise first to fourth pad parts 2201,2202, 2203, and 2204. Each of the first to fourth pad parts 2201, 2202,2203, and 2204 may comprise a first pad unit 226, a second pad unit 227,and a third pad unit 228.

The first pad unit 2261 of the first pad part 2201 may be connected to asecond extension part 2251 of the first protrusion part. The first padunit 2261 of the first pad part 2201 may be formed by being bent fromthe second extension part 2251 of the first protrusion part. The firstpad unit 2261 of the first pad part 2201 may form a predetermined angleb with the second extension part 2251 of the first protrusion part.Here, the predetermined angle b may be an acute angle. The second padunit 2271 of the first pad part 2201 may be formed by being bent fromthe first pad unit 2261 of the first pad part. The second pad unit 2271of the first pad part 2201 may have a predetermined angle c with thefirst pad unit 2261 of the first pad part 2201. Here, the predeterminedangle may be a right angle. The third pad unit 2281 of the first padpart 2201 may be formed by being bent from the second pad unit 2271 ofthe first pad part 2201. The third pad unit 2281 of the first pad part2201 may be disposed on the first substrate 100. The third pad unit 2281of the first pad part 2201 may be coupled to the first connector 122.

The first pad unit 2262 of the second pad part 2202 may be connected tothe second extension part 2252 of the second protrusion part. The firstpad unit 2262 of the second pad part 2202 may be formed by being bentfrom the second extension part 2252 of the second protrusion part. Thefirst pad unit 2262 of the second pad part 2202 may form a predeterminedangle b with the second extension part 2252 of the second protrusionpart. Here, the predetermined angle b may be an acute angle. The secondpad unit 2272 of the second pad part 2202 may be formed by being bentfrom the first pad unit 2262 of the second pad part. The second pad unit2272 of the second pad part 2202 may form a predetermined angle c withthe first pad unit 2262 of the second pad part 2202. Here, thepredetermined angle may be a right angle. The third pad unit 2282 of thesecond pad part 2202 may be formed by being bent from the second padunit 2272 of the second pad part 2202. The third pad unit 2282 of thesecond pad part 2202 may be disposed on the first substrate 100. Thethird pad unit 2282 of the second pad part 2202 may be coupled to thesecond connector 124.

The first pad unit 2263 of the third pad part 2203 may be connected tothe second extension part 2253 of the third protrusion part. The firstpad unit 2263 of the third pad part 2203 may be formed by being bentfrom the second extension part 2253 of the third protrusion part. Thefirst pad unit 2263 of the third pad part 2203 may form a predeterminedangle b with the second extension part 2253 of the third protrusionpart. Here, the predetermined angle b may be an acute angle. The secondpad unit 2273 of the third pad part 2203 may be formed by being bentfrom the first pad unit 2263 of the third pad part. The second pad unit2273 of the third pad part 2203 may form a predetermined angle c withthe first pad unit 2263 of the third pad part 2203. Here, thepredetermined angle may be a right angle. The third pad unit 2283 of thethird pad part 2203 may be formed by being bent from the second pad unit2273 of the third pad part 2203. The third pad unit 2283 of the thirdpad part 2203 may be disposed on the first substrate 100. The third padunit 2283 of the third pad part 2203 may be coupled to the thirdconnector 126.

The first pad unit 2264 of the fourth pad part 2204 may be connected tothe second extension part 2254 of the fourth protrusion part. The firstpad unit 2264 of the fourth pad part 2204 may be formed by being bentfrom the second extension part 2254 of the fourth protrusion part. Thefirst pad unit 2264 of the fourth pad part 2204 may form a predeterminedangle b with the second extension part 2254 of the fourth protrusionpart. Here, the predetermined angle b may be an acute angle. The secondpad unit 2274 of the fourth pad part 2204 may be formed by being bentfrom the first pad unit 2264 of the fourth pad part 2204. The second padunit 2274 of the fourth pad part 2204 may form a predetermined angle cwith the first pad unit 2264 of the fourth pad part 2204. Here, thepredetermined angle may be a right angle. The third pad unit 2284 of thefourth pad part 2204 may be formed by being bent from the second padunit 2274 of the fourth pad part 2204. The third pad unit 2284 of thefourth pad part 2204 may be disposed on the first substrate 100. Thethird pad unit 2284 of the fourth pad part 2204 may be coupled to thefourth connector 128.

The second substrate 200 comprises a first region 210 in which the imagesensor 300 is disposed, a second region 222 being bent from one end ofthe first region 210 in a first direction, and a third region 225 beingbent from one end of the second region 222 in a second direction. Thesecond region 222 may be overlapped with the first driving unit 400 in adirection perpendicular to the optical axis, that is, in a horizontaldirection.

The camera module 10 may comprise an image sensor 300. The image sensor300 may be disposed on the second substrate 200. The image sensor 300may be disposed in the second opening 202 formed in the second substrate200. Unlike this, the image sensor 300 may be mounted on a separatesupport member and disposed at a position overlapped with the secondopening 202 in the optical axis direction. The image sensor 300 may beformed in a rectangular shape corresponding to the second opening 202 ofthe second substrate 200. The image sensor 300 may perform a function ofconverting light that has passed through the lens module into an imagedata. More specifically, the image sensor 300 may convert light into ananalog signal through a pixel array comprising a plurality of pixels,and generate the image data by synthesizing a digital signalcorresponding to the analog signal.

The camera module 10 may comprise a first driving unit 400. The firstdriving unit 400 may be disposed on the second substrate 200. The firstdriving unit 400 may electromagnetically interact with the seconddriving unit 800. The second substrate 200 may be moved or rotated withrespect to the first substrate 100 through an electromagneticinteraction between the first driving unit 400 and the second drivingunit 800. The first driving unit 400 may comprise a plurality of firstdriving units 410, 420, 430, 440, 450, and 460 and a third substrate500.

The plurality of first driving units 410, 420, 430, 440, 450, and 460may be disposed on the upper surface of the body 210 of the secondsubstrate 200. Each of the plurality of first driving units 410, 420,430, 440, 450, and 460 may comprise a magnet magnetized with an N poleand an S pole. The plurality of first driving units 410, 420, 430, 440,450, and 460 may be disposed adjacent to the circumference of the imagesensor 300.

The plurality of first driving units 410, 420, 430, 440, 450, and 460may comprise: two first driving units 410 and 440 disposed adjacent toboth ends of the first side of the image sensor 300; two first drivingunits 430 and 460 disposed adjacent to both ends of the second sidefacing the first side of the image sensor 300; and two first drivingunits 420 and 450 disposed adjacent to a central region of a third sideand a fourth side of the image sensor.

The plurality of first driving units 410, 420, 430, 440, 450, and 460may comprise: four first driving units 410, 430, 440, 460 disposedadjacent to the edge region of the image sensor 300; and two firstdriving units 420 and 450 disposed adjacent to the central region of theside of the image sensor 300.

The plurality of first driving units 410, 420, 430, 440, 450, and 460may comprise: two first driving units 410 and 440 disposed adjacent tothe edge of the body 210 of the second substrate 200 and formed byextending along the third side 214; two first driving units 430 and 460disposed adjacent to the edge of the body 210 of the second substrate200 and formed by extending along the fourth side 218 facing the thirdside 214; one first driving unit 420 disposed adjacent to a centralregion of the first side 212 of the body 210 of the second substrate 200and formed by extending along the first side 212; and one first drivingunit 450 disposed adjacent to a central region of the second side 216 ofthe body 210 of the second substrate 200 and formed by extending alongthe second side 216.

The plurality of first driving units 410, 420, 430, 440, 450, and 460may be overlapped with a portion of the second substrate 200 in adirection perpendicular to the optical axis. Specifically, the pluralityof first driving units 410, 420, 430, 440, 450, and 460 may beoverlapped with a protrusion part 224 of the second substrate 200, a padpart 220 in a direction perpendicular to the optical axis. One 410 ofthe plurality of first driving units 410, 420, 430, 440, 450, and 460 isdisposed on one side of the second extension part 2251 of the firstprotrusion part, and the other 420 may be disposed on the other side ofthe second extension part 2251.

Among the plurality of first driving units 410, 420, 430, 440, 450, and460: one 410 is disposed between the second extension part 2251 of thefirst protrusion part and the first pad unit 2261 of the first pad part2201; the other 420 is disposed between a second extension part 2251 ofa first protrusion part and a second extension part 2252 of a secondprotrusion part; another one 430 is disposed between the secondextension part 2252 of the second protrusion part and the first pad unit2262 of the second pad part 2202; another one 440 is disposed betweenthe first pad unit 2263 of the third pad part 2203 and the secondextension part 2253 of the third protrusion part; another one 450 isdisposed between the second extension part 2253 of the third protrusionpart and the second extension part 2254 of the fourth protrusion part;and another one 460 may be disposed between the second extension part2254 of the fourth protrusion part and the first pad unit 2264 of thefourth pad part 2204.

A plurality of first driving units 410, 420, 430, 440, 450, and 460 maybe disposed on the third substrate 500. The third substrate 500 maycomprise a third opening 502 and a plurality of holes 510, 520, 530,540, 550, and 560. The third opening 502 may be overlapped with theimage sensor 300 in the optical axis direction. A filter 600 may bedisposed in the third opening 502. A plurality of first driving units410, 420, 430, 440, 450, and 460 may be disposed in the plurality ofholes 510, 520, 530, 540, 550, and 560 of the third substrate 500. Eachof the plurality of holes 510, 520, 530, 540, 550, and 560 of the thirdsubstrate 500 is at a position corresponding to each of the plurality offirst driving units 410, 420, 430, 440, 450, and 460 is formed, and maybe formed in a corresponding shape. The third substrate 500 may beformed of an insulating material, but is not limited thereto and may bevariously changed.

In addition, the third substrate 500 may comprise a slit formed byextending from an outer side surface or a hole formed by extending in avertical direction. The plurality of slits or holes of the thirdsubstrate 500 may be formed in a position overlapped with the hole 204of the second substrate 200 and the arm 912 of the holder 900 in theoptical axis direction. Through this, when a wire 100 is connected tothe arm 912 of the holder 900 and the hole 204 of the second substrate200, an interference phenomenon may be prevented. The slits of the thirdsubstrate 500 may comprise a plurality of slits, or the holes of thethird substrate 500 may comprise a plurality of holes.

The camera module 10 may comprise a filter 600. The filter 600 mayfilter light corresponding to a specific wavelength range for the lightthat has passed through the first lens unit 1200, the liquid lens unit1400, and the second lens unit 1300. The filter 600 may be an infrared(IR) cutoff filter or an ultraviolet (UV) cutoff filter, but the scopeof the present invention is not limited thereto. The filter 600 may bedisposed on the image sensor 300. The filter 600 may be disposed insidethe third substrate 500. The filter 600 may be disposed in the thirdopening 502 of the third substrate 500. The filter 600 may be disposedor mounted in an inner groove or a step of the third substrate 500.

The camera module 10 may comprise a second driving unit 800. The seconddriving unit 800 may correspond to the first driving unit 400.Specifically, the second driving unit 800 may be disposed at a positionfacing the first driving unit 400. The second driving unit 800 maycomprise a plurality of second driving units 810, 820, 830, 840, 850,and 860 and a fourth substrate 700.

The plurality of second driving units 810, 820, 830, 840, 850, and 860may face the plurality of first driving units 410, 420, 430, 440, 450,and 460, respectively. The plurality of second driving units 810, 820,830, 840, 850, and 860 may be overlapped with the plurality of firstdriving units 410, 420, 430, 440, 450, and 460 in the optical axisdirection, respectively. The plurality of second driving units 810, 820,830, 840, 850, and 860 may be formed in a shape corresponding to theplurality of first driving units 410, 420, 430, 440, 450, and 460. Theplurality of second driving units 810, 820, 830, 840, 850, and 860 maycomprise coils. The plurality of second driving units 810, 820, 830,840, 850, and 860 may be disposed on the lower surface of the fourthsubstrate 700. The plurality of second driving units 810, 820, 830, 840,850, and 860 may comprise a fine pattern coil.

A plurality of second driving units 810, 820, 830, 840, 850, and 860 maybe disposed on the fourth substrate 700. A plurality of second drivingunits 810, 820, 830, 840, 850, and 860 may be disposed on the lowersurface of the fourth substrate 700. The fourth substrate 700 maycomprise a fourth opening 702 and a terminal portion 710. The fourthopening 702 may be overlapped with the image sensor 300 in the opticalaxis direction. The terminal portion 710 may be formed by extending fromthe side of the fourth substrate 700 in the optical axis direction ordownward direction. One end of the terminal portion 710 may be formed byextending from a side surface of the fourth substrate 700, and the otherend may be disposed in a groove formed in the first opening 110 of thefirst substrate 100. The terminal portion 710 may electrically connectthe fourth substrate 700 and the first substrate 100.

The camera module 10 may comprise a holder 900. The holder 900 may bedisposed between the first driving unit 400 and the second driving unit800. The holder 900 may be fixedly disposed on the first substrate 100.The holder 900 may be overlapped with the first substrate 100 in theoptical axis direction. The holder 900 may not be overlapped with aplurality of first driving units 410, 420, 430, 440, 450, and 460, aplurality of second driving units 810, 820, 830, 840, 850, and 860, andthe protrusion part 224 of the second substrate 200, and the pad part220 in the optical axis direction. Through this, the holder 900 fixedlydisposed on the first substrate 100 can reduce the effect on theelectromagnetic interaction occurring between a plurality of firstdriving units 410, 420, 430, 440, 450, and 460 and a plurality of seconddriving units 810, 820, 830, 840, 850, and 860. The holder 900 maycomprise a support part 910, a central part 920, and an arm 912.

The support part 910 may be fixed to the upper surface of the firstsubstrate 100 using an adhesive or the like. The support part 910 may beformed by extending outwardly from the central part 920 and formed byextending downward. In one embodiment of the present invention, thesupport part 910 is disposed on the upper surface of the first substrate100 in six regions as an example, but this is not limited thereto, andthe shape of the support part 910 may be variously changed.

In addition, the support part 910 may be formed in a shape that does notbe overlapped with a plurality of first driving units 410, 420, 430,440, 450, and 460, a plurality of second driving units 810, 820, 830,840, 850, and 860, the protrusion part 224 of the second substrate 200,and the pad part 220 in the optical axis direction. Specifically, thesupport part 910 may comprise first and second support units disposed onthe upper surface of the second substrate 200 adjacent to the firstshort side 212 and the second short side 216 of the second substrate200; and two second support units disposed on the upper surface of thesecond substrate 200 adjacent to a first long side 214 and a second longside 218. At this time, the second support unit may be formed in aletter “ ” shape. In addition, the first and second support units maycomprise holes formed concave in the center direction of the supportpart 910 so that the terminal portion 710 of the fourth substrate 700 isdisposed.

The central part 920 may be formed in a hexagonal plate shape. Thecentral part 920 may be disposed above the first opening 110 of thefirst substrate 100. The central part 920 may comprise a fifth opening922. The fifth opening 922 may be disposed in a central region of thecentral part 920. The fifth opening 922 may be overlapped with the imagesensor 300, the filter 600, the lens module and the optical axisdirection. The fifth opening 922 may be disposed between the fourthopening 702 and the third opening 502. The fifth opening 922 may have acircular shape.

In addition, the central part 920 may be formed in a shape notoverlapped with a plurality of first driving units 410, 420, 430, 440,450, and 460, a plurality of second driving units 810, 820, 830, 840,850, and 860, the protrusion part 224 of the substrate 200, and the padpart 220 in the optical axis direction. Specifically, the central part920 may comprise a hole disposed between the outer surface and the fifthopening 922. The hole of the central part 920 may be formed in a shapecorresponding to at least a part of a plurality of first driving units410, 420, 430, 440, 450, and 460 and a plurality of second driving units810, 820, 830, 840, 850, and 860 and disposed at a correspondingposition. In one embodiment of the present invention, the hole of thecentral part 920 is described as an example that it is formed in a shapecorresponding to the two first drive units 420 and 450 and the twosecond driving units 820 and 850, in a position not overlapped with twofirst driving units 420 and 450 among a plurality of first driving units410, 420, 430, 440, 450, and 460, and two second driving units 820 and850 of the second driving units 810, 820, 830, 840, 850, and 860 in theoptical axis direction, but is not limited thereto and may be variouslychanged.

The arm 912 may be formed by extending from the support part 910 in adirection perpendicular to the optical axis. The arm 912 may be formedby extending from the support part 910 to an inner region of the holder900. The arm 912 may be formed of a metal material. The wire 1000 may becoupled to the hole formed in the arm 912. The arm 912 may comprise aplurality of arms formed spaced apart from each other. In an embodimentof the present invention, four arms are described as an example, but thepresent invention is not limited thereto and may be variously changedaccording to the number of wires 1000.

The camera module 10 may comprise a wire 1000. The wire 1000 may becoupled to the second substrate 200 and the holder 900. One end of thewire 1000 may be coupled to the hole 204 of the second substrate 200,and the other end may be coupled to the hole of the arm 912 of theholder 900. The wire 1000 may be formed by extending in the optical axisdirection. The wire 1000 may elastically support the movement orrotation of the second substrate 200. The wire 1000 may comprise aplurality of wires. In one embodiment of the present invention, thenumber of wires is described to be four as an example, but the number ofwires 1000 is not limited thereto, and the number of wires 1000 may bevariously changed.

The camera module 10 may comprise a lens holder 1100. The lens holder1100 may comprise a first side surface 1102 having a first opening and asecond side surface 1104 having a second opening facing the firstopening in a direction perpendicular to the optical axis direction. Thelens holder 1100 may comprise a through hole in which an upper portionand a lower portion thereof is open, and the first lens unit 1200, theliquid lens unit 1400, and the second lens unit 1300 may be disposed inthe through hole formed in the inside of the lens holder 1100. The firstlens unit 1200 and the second lens unit 1300 may be solid lens units.The first lens unit 1200 may be coupled to an upper hole formed abovethe lens holder 1100, and the second lens unit 1300 may be coupled to alower hole formed below the lens holder 1100. The liquid lens unit 1400may be disposed and coupled to a first opening and/or a second openingpositioned between the upper hole and the lower hole, or disposed andcoupled between the first opening and the second opening. Light incidenton the first lens 1200 from the outside of the camera module 10 may passthrough the liquid lens unit 1400 and enter the second lens unit 1300.

The camera module 10 may comprise a first lens unit 1200 and a secondlens unit 1300. The first lens unit 1200 may be disposed in an upperhole of the lens holder 1100. The second lens unit 1300 may be disposedin a lower hole of the lens holder 1100. The first lens unit 1200 andthe second lens unit 1300 may comprise at least one lens.

An exposure lens (not shown) may be provided on the front side of thefirst lens unit 1100, and a cover glass may be disposed on the frontside of the exposure lens. Since the exposure lens is protruded towardthe outside of the lens holder 900, it is exposed to the outside and thesurface may be damaged. If the surface of the lens is damaged, the imagequality of the image captured by the camera module 10 may bedeteriorated. Therefore, in order to prevent and suppress surface damageof the exposed lens, a method such as disposing a cover glass, forming acoating layer, or a method of configuring an exposed lens with awear-resistant material having a higher rigidity than that of the firstlens unit 1200 or the second lens unit 1300 may be applied to preventsurface damage of the exposed lens.

The camera module 10 may comprise a liquid lens unit 1400. The liquidlens unit 1400 may be disposed on the lens holder 1100. The liquid lensunit 1400 may be inserted or disposed in the first opening or the secondopening formed in the side walls 1102 and 1104 of the lens holder 1100.The liquid lens unit 1400 may comprise an individual electrodeconnection substrate 1410, a liquid lens 1420, a spacer 1430, and acommon electrode connection substrate 1440.

The individual electrode connection substrate 1410 may electricallyconnect the individual electrodes of the liquid lens unit 1400 to thefirst substrate 100. The individual electrode connection substrate 1410may be implemented as an FPCB. The liquid lens 1420 may comprise aplurality of plates formed to accommodate two different liquids.

The spacer 1430 may be coupled while surrounding the liquid lens 1420,and may protect the liquid lens 1420 from external impact. Also, thespacer 1430 may be in contact with a gripper during insertion into thelens holder 1100 or during active alignment.

The common electrode connection substrate 1440 may electrically connectthe common electrode of the liquid lens unit 1400 to the first substrate100. The common electrode connection substrate 1440 may be implementedas a flexible circuit board (FPCB) or a single metal substrate(conductive metal plate), and may be implemented as a metal substratecomprising an insulating layer in at least a partial region excludingthe pad exposed at a position corresponding to the pad for the commonelectrode of the pads and the first substrate 100.

Each of the common electrode connection substrate 1440 and theindividual electrode connection substrate 1410 may be bent toward thefirst substrate 100. The individual electrode connection substrate 1410may be electrically connected to electrode pads formed on the firstsubstrate 100 through connection pads electrically connected to each ofthe individual electrodes. The connection pad and the electrode pad maybe electrically connected by a conductive epoxy or soldering, but thescope of the present invention is not limited thereto.

Likewise, the common electrode connection substrate 1440 may beelectrically connected to an electrode pad formed on the first substrate100 through a connection pad electrically connected to the commonelectrode.

Here, the electrode pads connected to the common electrode connectionsubstrate 1440 and the individual electrode connection substrate 1410may be defined as a first pad member and a second pad member,respectively, and the first pad member and the second pad member may bedisposed in a direction away from the element 102 disposed on the firstsubstrate 100 in the center of the liquid lens.

The interface between the conductive liquid and the non-conductiveliquid is deformed by the driving voltage applied through the commonelectrode connection substrate 1440 and the individual electrodeconnection substrate 1410, so that the curvature and/or focal length ofthe liquid lens unit 1400 can be changed. When the deformation of theinterface and the change of curvature are controlled, the liquid lensunit 1400 and the camera module 10 and the optical device comprising thesame can perform an auto-focusing (AF) function, camera shake correctionor image shake prevention (optical image stabilizer, OIS) functions, andthe like.

FIGS. 10 to 13 are operational diagrams of a camera module according toan embodiment of the present invention.

Hereinafter, an operation of the camera module according to anembodiment of the present invention will be described with reference toFIGS. 10 to 13 .

Referring to FIGS. 10 and 11 , the second substrate 200 is moved in thex-axis direction through electromagnetic interaction between the firstdriving unit 400 and the second driving unit 800. At this time, theprotrusion part 224 and the pad part 220 of the second substrate 200that are being bent at least twice are moved in the x-axis.

Referring to FIGS. 10 and 12 , the second substrate 200 is moved in they-axis direction through electromagnetic interaction between the firstdriving unit 400 and the second driving unit 800. At this time, theprotrusion part 224 and the pad part 220 of the second substrate 200that are being bent at least twice are moved along the y-axis.

Referring to FIGS. 10 and 13 , the second substrate 200 is rotated inone direction through electromagnetic interaction between the firstdriving unit 400 and the second driving unit 800. At this time, theprotrusion part 224 and the pad part 220 of the second substrate 200that are being bent at least twice are rotated in one direction.

In the camera module 10 according to the embodiment of the presentinvention, the spring stiffness is reduced due to the protrusion part224 and the pad part 220 of the second substrate 200 that is being bentat least twice, thereby reducing tension. Accordingly, it is possible toreduce the size of the sensor driving device and reduce powerconsumption. In addition, it is possible to reduce power consumption ofa sensor driving device due to the rigid symmetric structure. Therefore,it is possible to reduce the size of the camera module 10 and reduce thepower consumption.

The embodiments of the present invention have been described above withreference to the accompanying drawings, but a person skilled in the artto which the present invention belongs may understand that the presentinvention can be implemented in other specific forms without changingthe technical spirit or essential features. Therefore, it should beunderstood that the embodiments described above are illustrative andnon-limiting in all respects.

The invention claimed is:
 1. A sensor driving device comprising: a firstsubstrate; a second substrate disposed above the first substrate andelectrically connected with the first substrate; and an image sensordisposed on the second substrate, wherein the second substrate comprisesa body and a first protrusion part protruding from one end of the body,wherein the first protrusion part comprises a first extension partextending from the body in a first direction away from the firstsubstrate, and a second extension part extending from the firstextension part in a second direction different from the first direction,wherein the second substrate comprises a first pad part comprising oneend connected to the first protrusion part and the other end disposed onthe first substrate, and wherein the first pad part comprises a firstpad unit bent from the second extension part of the first protrusionpart, a second pad unit bent from the first pad unit, and a third padunit bent from the second pad unit.
 2. The sensor driving device ofclaim 1, wherein the second substrate comprises a second pad partcomprising one end connected to the second protrusion part and the otherend disposed on the first substrate, a third pad part comprising one endconnected to the third protrusion part and the other end disposed on thefirst substrate, and a fourth pad part comprising one end connected tothe fourth protrusion part and the other end disposed on the firstsubstrate.
 3. The sensor driving device of claim 2, wherein the first tofourth pad parts are spaced apart from each other and not overlappedwith the body in the optical axis direction.
 4. A sensor driving devicecomprising: a first substrate; a second substrate disposed above thefirst substrate and electrically connected with the first substrate; afirst driving unit disposed on the second substrate; and a seconddriving unit corresponding to the first driving unit; an image sensordisposed on the second substrate, wherein the second substrate comprisesa body and a first protrusion part protruding from one end of the body,wherein the first protrusion part comprises a first extension partextending from the body in a first direction away from the firstsubstrate, and a second extension part extending from the firstextension part in a second direction different from the first direction,wherein the first driving unit comprises six magnets, wherein the seconddriving unit comprises six coils corresponding with the six magnets,wherein four magnets of the six magnets are disposed adjacent to fourcorners of the image sensor, respectively, and wherein the remaining twomagnets of the six magnets are disposed between the four magnets.
 5. Asensor driving device comprising: a first substrate; a second substratedisposed on the first substrate and electrically connected with thefirst substrate, the second substrate comprising: a body; a firstprotrusion part protruding from one end of the body; and a secondprotrusion part protruding from another end of the body; and an imagesensor disposed on the body of the second substrate, wherein the firstprotrusion part comprises: a first bent part having a first bending axisparallel to the end of the body; a first extension part extending fromthe first bent part in a first direction away from the body; a secondbent part extending from the first extension part and having a secondbending axis perpendicular to the first bending axis; and a secondextension part extending from the second bent part in a second directiondifferent from the first direction, wherein the second protrusion partcomprises: a first bent part having a first bending axis parallel to theanother of the body; a first extension part extending from the firstbent part in a first direction away from the body; a second bent partextending from the first extension part and having a second bending axisperpendicular to the first bending axis; and a second extension partextending from the second bent part in a second direction different fromthe first direction, wherein the first extension part of the firstprotrusion part faces the first extension part of the second protrusionpart, and wherein the first extension part of the first protrusion partand the first extension part of the second protrusion part are disposedparallel each other.
 6. The sensor driving device of claim 5, whereinthe second substrate comprises third and fourth protrusion partsprotruding from the other end of the body and spaced apart from eachother, wherein the third protrusion part comprises a first extensionpart extending from the body in the first direction away from the firstsubstrate, and a second extension part extending from the firstextension part of the third protrusion in a fourth direction differentfrom the first direction, and wherein the fourth protrusion partcomprises a first extension part extending from the body in the firstdirection away from the first substrate, and a second extension partextending from the first extension part of the fourth protrusion in afifth direction different from the first direction.
 7. The sensordriving device of claim 6, wherein the one end of the body is a firstouter lateral surface of the body, wherein the other end of the body isa second outer lateral surface opposite to the first outer lateralsurface of the body, wherein the first direction is an optical axisdirection, and wherein the second to fifth directions are a directionperpendicular to the optical axis direction.
 8. The sensor drivingdevice of claim 7, wherein the second extension part of the firstprotrusion part, the second extension part of the second protrusionpart, the second extension part of the third protrusion part, and thesecond extension part of the fourth protrusion part are overlapped withthe body in the optical axis direction.
 9. The sensor driving device ofclaim 5, comprising: a first driving unit disposed on the secondsubstrate; and a second driving unit corresponding to the first drivingunit.
 10. The sensor driving device of claim 5, comprising: a coildisposed on the first substrate; and a magnet disposed on the secondsubstrate, wherein the magnet moves together with the image sensor withrespect to the first substrate, when a current is supplied to the coil.11. A camera module comprising: the sensor driving device of claim 5; alens holder disposed above the second substrate of the sensor drivingdevice; and a liquid lens disposed on the lens holder.
 12. An opticalapparatus comprising: a housing; the camera module of claim 11 disposedon the housing; and a display disposed on the housing.
 13. A cameramodule comprising: the sensor driving device of claim 5; a holderdisposed on the first substrate; a lens holder disposed on the holder;and a lens disposed on the lens holder.
 14. The camera module of claim13, wherein the first direction is an optical axis direction, andwherein the second direction is a direction perpendicular to the opticalaxis direction.
 15. A camera module comprising: the sensor drivingdevice of claim 5; a holder disposed on the first substrate; a focusadjustment unit configured to perform an auto focus function; and adriving unit configured to move the image sensor in a directionperpendicular to an optical axis direction.
 16. The sensor drivingdevice of claim 5, wherein the second extension part of the firstprotrusion part faces the second extension part of the second protrusionpart, and wherein the second extension part of the first protrusion partand the second extension part of the second protrusion part are disposedparallel each other.